But if you really can't be bothered then the same information is here below.

For this achievement it can either be really easy or really hard(if you try legit).The best way (& easiest) for this to be obtained is to set up a boosting session. After boosting the online with 6 friends it became obvious that the best way to earn this achievement is to have one person host a Team leader game and then join in whatever sequence you wish. BUT after this first game for things to go by smoothly you must join in a certain pattern.

For the dim witted the following image is to aid you;

Team Alpha Player 1 Player 2 Player 3

Team Bravo Player 4Player 5Player 6

Now you want to keep the teams the same way for 3 games. To do so; Player 1 hosts, player 4 joins next, then 2,5,3 & 6. This will ensure that Team Alpha will get all their win based achievements at the same time & vice versa.

Now you are probably wondering why I mentioned Team Leader before well that is because if you play it on the map 'Kill House' everyone runs to the top of the buildings in front of them which entails two flights of stairs. The allocated team to win then shoots the losing team once up topside. 1 game takes all of 15 seconds if everyone is switched on. Meaning all 6 of you will have the three mentioned achievements in a matter of 5-10 minutes.